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560SL central and foot flaps

  • stan73
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22 Feb 2023 22:19 #311368 by stan73
560SL central and foot flaps was created by stan73
Dear all, 

My dashboard is out for crack repair
and it is a time to repair problems with vacuum elements. 
Everything is done: changed vacuum membranes, 
repair cracks on plastic of heatbox, checked vacuum leaks, but fresh air, central and foot flaps don’t work. 
I found value theme for repair of pressure valve Y34. It is on my desk already and found out the circuits 2 and 4 don’t click when apply 12 V. Also circuit 1 ( for foot flaps) 
is sealed with yellow plug. Should I open that plug? It looks like original, maybe is something common for USA cars?


560SL, 1987

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